I called as I could not imagine going through "two" black ink cartridges since Nov. '17, 2017. Not only was BELINA knowledgeable and CUTE but so very patient with an ole goat of 74 years. Belinda walked me through the reboot process and when that did not work advised my of my guarantee coverage. Bottom line 1ink will replace the cartridges at no cost - I will return them - if in fact they are empty, they will advise me and bill accordingly - which, to me is only fair. Thank You BELINDA and 1ink for extraordinary customer service. You not only saved a customer - you gained one for life of course I am old so it my be short lived - said jokingly.